CentOS 环境下 Open JDK 替换为 Oracle JDK

环境

  • CentOS 7.4
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[root@localhost ~]# java -version
openjdk version "1.8.0_212"
OpenJDK Runtime Environment (build 1.8.0_212-b04)
OpenJDK 64-Bit Server VM (build 25.212-b04, mixed mode

下载 Oracle JDK

首先从 Oracle 网站 下载所需的JDK。

替换为 Oracle JDK

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[root@localhost ~]# rpm -ivh jdk-8u144-linux-x64.rpm
准备中... ################################# [100%]
正在升级/安装...
1:jdk1.8.0_144-2000:1.8.0_144-fcs ################################# [100%]
Unpacking JAR files...
tools.jar...
plugin.jar...
javaws.jar...
deploy.jar...
rt.jar...
jsse.jar...
charsets.jar...
localedata.jar...
[root@localhost ~]# update-alternatives --config java

共有 2 个提供“java”的程序。

选项 命令
-----------------------------------------------
*+ 1 java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.212.b04-0.el7_6.x86_64/jre/bin/java)
2 /usr/java/jdk1.8.0_144/jre/bin/java

按 Enter 保留当前选项[+],或者键入选项编号:2

验证

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[root@localhost ~]# java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)

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